Here are some of the signs that a betta fish is too hot:
* Lethargy
* Loss of appetite
* Rapid breathing
* Gasping at the surface of the water
* Darkening of the body color
* Fin clamping
* Tail biting
* Death
If you notice any of these signs, it's important to take action to lower the water temperature immediately. You can do this by:
* Moving the betta fish to a cooler location
* Adding cold water to the tank
* Using a fan to circulate the water
* Placing a frozen water bottle in the tank
Once the water temperature has been lowered, it's important to monitor the betta fish closely for any signs of stress or illness. If the betta fish does not improve, it's important to take it to a veterinarian for further treatment.